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Astronomy Know How
Helping you See the Night Sky - Newsletter No. 64 February 2012

Happy Stargazing!

And welcome and thanks for subscribing to this my FREE! monthly newsletter. I hope that you enjoy it.


Important news this month:

So who managed to see any Aurora recently?

If you aren't aware, the Sun has finally started to perform as it should as it approaches 'Solar Maximum'. This means that we get a chance to see the Northern Nights, especially if you live in such places as Scotland or Scandinavia or Alaska. I'll tell you more about how and why this happens and how you can maximise your chances of seeing it later in this Newsletter...

For those of you who have already bought or who are thinking of buying some of the eBooks and eCourse on our website, there will be some changes as to how we present and distribute them coming very soon. If you already own one or more of these, don't worry, we'll be getting in contact with you so that you can keep enjoying and using these products.

I'm delighted to say that my novel 'In The Lion's Paw' is selling well. I've been getting some really great reviews on Amazon too! If you've already read it and haven't done a review yet, please do, it really helps... So thanks in advance. This is it! Available in Kindle format from Amazon UK and Amazon USA and if you (like so many) prefer to hold the book in your hand and turn the pages, you can get the print version here

This Newsletter is now available as a 'Podcast'. Yes, that's right you can download an mp3 file with my dulcet tones giving you the lowdown on what can be seen in the sky this month. Put it on your iPod and take a tour of the skies in real time! So give it a go here... It's also now to be found broadcast on 'Astronomy FM' Internet Radio Under British Skies I did an interview for them about my book too, which will be broadcast at 8:00pm on 19th February!

If you would like to keep up to date on a more immediate basis than just the monthly Newsletter, then you can join my Facebook group
Astronomy Know How with Ninian Boyle by clicking 'like' on that page, or follow me on Twitter. I put more up to date news and events on there. It would be great if you could join me!

I wish you clear skies,

Ninian
 
Contents

In this issue:
  1. February's Highlights
  2. The Moon This Month
  3. The Planets This Month
  4. Double Star Observing
  5. Deep Sky Highlights of February
  6. Other News
  7. News Links
  8. The Secrets of Astronomy
  9. Are you interested in Imaging?
  10. Contact Us
 
February's Highlights

The Solar System is going to be giving us lot's to observe this month. There's more detail about what's going on with the planets a little later...

The constellations of Spring as starting to come into view later in the evenings, while those of Winter still shine brightly in the early evenings...

There are lots of celestial goodies to view, especially the constellation of Orion the Hunter which now sits due south in the mid evening. Orion is easily recognised by his three belt stars and hanging down from this is a line of stars that has a 'fuzzy' patch of light. This is the Great Orion Nebula and so is visible with the naked eye. Binoculars will show up its curving shape...

Another naked eye object that will reward a view with binoculars is the star cluster M44 otherwise known as the Beehive Cluster, a good description for it as the stars do look very much like a swarm of bees buzzing around a hive. The ancient Chinese had another name for it altogether and much more macabre they called it 'the exhalation of piled up corpses'. I think I'll stick to the 'Beehive Cluster'!

Comet Garradd is still on show early in the month if you have binoculars but is not that easy to see, however as the month progresses the viewing should improve. You currently find the comet in the constellation of Hercules not far from the globular cluster M92. It is about a half a degree away or around the same width as the full Moon. The comet is around magnitude 7 or a little fainter than the more famous globular cluster M13 also to be found in Hercules, so you will definitely need binoculars to see it. The comet is heading north over the course of the month which should mean that it will become a little easier to see. At the beginning of the month you will have to get up early to see it, the best time being around 5:30 to 6:30 GMT. By the end of the month though, it should be visible all night long.

The Aurora or Northern Lights have been seen quite a lot from parts of Northern Europe these last few weeks. This is because the Sun has been sending out huge 'flares' of material which can head towards us and then slams into our magnetic field. The energetic particles then follow the Earth's magnetic field lines towards the poles and meet the atoms of our atmosphere and cause them to fluoresce, similar to what happens in a strip light. The colours of the aurora depend on the type of atom they the charged particles strike. Oxygen atoms for example usually glow with a green colour. So the more active the Sun gets, the more likely we are to see the Northern (or Southern) Lights.

There are lots of interesting planetary conjunctions this month, but more on this below...

Back to List of Contents
 
The Moon This Month

The 1st February sees the Moon displayed just past its 'first quarter' phase. If you are interested in having a go at taking pictures of our nearest neighbour in space, then around this phase is always a good time to experiment as you get long shadows around the 'terminator', the line which divides the lit and unlit portions of the Moon. The shadows help to make the craters and mountains stand out and appear more 3-dimensional.

Full Moon is on the 7th of the month and the Moon is now in the constellation of Cancer the Crab heading towards Leo. The bright star Regulus, the brightest star in the constellation of Leo should still be visible to the east (left) of the Moon, although the glare will wash out most of the other stars in this region of sky.

Two days later on the 9th the Moon will pass 10-degrees to the south (below) the planet Mars. Mars should still be visible, like the star Regulus, in spite of the glare from the almost full Moon.

The 'last quarter Moon' is on the 14th. This when exactly half of the Moon is illuminated, in fact the eastern or left hand side if you are viewing from the northern hemisphere, although it doesn't appear over the horizon until after 2 o'clock in the morning.

New Moon occurs on 21st February. This is when the Moon and the Sun are in the same region of the sky, although as you might expect you do not always get a Total Solar Eclipse when this occurs due to Moon being slightly above (or sometimes below) the disc of the Sun. Over the next few days you should be able to make out a very thin crescent Moon low down in the west after the Sun has set. And so the cycle begins all over again.

If you would like to know more about the Moon, then there is loads of information on my website here.
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The Planets This Month

The first interesting occurrence for the planets this month is on the 8th. If you have a small telescope, take a look at the bright planet Jupiter hanging in the south-western sky in mid-evening. At around 19:50 UT (same as GMT) you should be able to observe the four Galilean moons of the giant planet, but if you look closely using a medium to high magnification, you should be able detect a small dark spot on the cloud tops of Jupiter. This is the shadow of Jupiter's moon, Europa. It will transit the disc of the planet and is a fascinating event to watch.

The 9th February will see the very bright (magnitude -4.0) planet Venus makes a close approach to the much fainter planet Uranus (magnitude +5.9). If you have binoculars or a small telescope and have never seen the faint planet Uranus before, this is a good opportunity to hunt it down. Uranus will be found just under half a degree to the north east of Venus and has a small, faint greenish disc. Be careful that Venus doesn't dazzle you such that you can't see faint and distant Uranus. Venus show a 75% illuminated disc at the beginning of the month that decreases and gets more interesting to 64% lit at the end of the month.

Mars is now well on show in the constellation of Leo from the 4th and gets steadily better as we go through the month. It is easily seen with the naked eye as a salmony-pink coloured star in the south-east around midnight. It will increase in apparent size as the month progresses, but will still be quite small. It will take a medium to large sized telescope to show much detail although even a small scope should be able to detect the bright polar cap. An orange or red colour filter will help to bring out any visible features.

Saturn is low down in the constellation of Virgo the Virgin. The rings are nicely spread now and are a lovely sight in a telescope. It will get better to view as the Spring draws on.
Back to List of Contents
 
Double Star Observing

It has been suggested that as many as half of all the stars in the sky are doubles. That is to say they either have another star which they both orbit around their common centre of gravity, or they look like two stars which are gravitationally bound but are not, we just see a 'line of sight' effect. There are also a few stars which are multiple systems, that is to say the are three or more stars which orbit a common centre of gravity.

There are two or three double stars which can be seen with the naked eye, the easiest of which lies in the handle of 'Plough'. These stars are named Mizar and Alcor, the only double star in the whole sky which has names for both stars. The stars are the highest ones in the handle of the Plough. See if you are sharp-eyed enough to see the pair.

If you have a small telescope you can see many more double stars. Here it is interesting to compare the brightness and colour of the individual stars, as many of them vary in both. Also, seeing just how close the stars are that you can make out as two (or more) separate stars is fun too. This will be limited to the size of the aperture of your telescope, how clear the air is (known as seeing) and just how sharp your eyes are! SO if you think double stars are interesting things to observe, let me know and I'll put a few suggestions in next month's Newsletter.
Back to List of Contents
 
Deep Sky Highlights of February

Interesting objects in the late winter skies...

The first small object of desire I would like to point you to is Messier 1 (M1) in the constellation of Taurus The Bull. It lies quite near the star zeta Taurii, the star at the southernmost tip of the Bull's horns. M1 can be found about 1-degree (about the width of your thumb) to the north of zeta Taurii. This is a supernova remnant, a star which blew itself to pieces and was seen and recorded by ancient Chinese astronomers back in 1054AD. It was bright enough then to be seen in daylight. It is much fainter now and can be quite tricky to spot in anything less than a 3-inch aperture telescope. It is known as the Crab Nebula. One look through your telescope will show you why.

Next, if you move due east along the Zodiac into Gemini The Twins you can find the star Castor. What is interesting about this is that it is not just one star, but two. This is a binary or double star which can be split using a small telescope and each star is also a spectroscopic binary. This is where we can't see the other stars but know that they are there by splitting the light of these stars up into their constituent spectra. So Castor is in fact a quadruple star system.

Moving east once again along the Zodiac, takes us into the constellation of Cancer the Crab. I already mentioned the open star cluster M44 or the 'Beehive Cluster', but there is another interesting star cluster nearby that is often overlooked to the south of M44. This is Messier 67 (M67). This is interesting because it is though that the age of the stars in this cluster are around the same age as that of the Sun, so by studying these stars we can learn a little more about the history of stars like our own. Again this cluster can be found easily in binoculars, but has more to offer the telescope owner.

Finally, if you drop down low into the south find the bright star Sirius (you can't really miss it!), and keep going a little further south (about 4-degrees and you should come across the open star cluster Messier 41. This is easily visible in binoculars even though it is quite near the horizon from the UK. A small scope will show it well. It contains about 100 stars.
Back to List of Contents
 
Other News


This is it! Available in Kindle format from Amazon UK and Amazon USA and if you (like so many) prefer to hold the book in your hand and turn the pages, you can get the print version here

To find out more about the book if you want you can visit the In the Lion's Paw website.

Amazon readers have said:
"I read it in two sittings and couldn't put it down."
"If you only read 1 book this year make it this one."
"Once you start reading this story you will be swept along through a tumultuous week in these characters' lives... "

If you need advice about purchasing equipment, then you can email me on ninianboyle at astronomyknowhow.com. I'd be happy to give you a few tips and point you to the right dealer who I think can help you with your purchase. No-one else gets this help; only YOU as a subscriber to my Newsletter!

If you would like more information about anything I've mentioned in this Newsletter, please email me ninianboyle at astronomyknowhow.com and I'd be happy to explain further.

Finally,

If you are on Facebook, please come and be 'fan' of my page 'Astronomy Know How with Ninian Boyle'. I'm planning to use it for lots of free information and tips on how to observe the night sky and also post up interesting events as they are set up. It will mean that you'll be the first to know about really useful things connected to your hobby, so join me on facebook

Oh! and you can follow me on Twitter too www.twitter.com/astroknowhow


Please take a look at and put you pictures up on our image gallery here - and if you have any difficulties please contact us so we know about it and can either help you or sort out any problems. Thanks.

If there is a course or talk that you would like me to cover, I would invite you to please let me know. I'm keen to provide you with the information that YOU want, rather than that which I think you might like. So please tell me
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  Here are some links to some other recent news stories that I thought you would find interesting...


"Aha" moments are rare in science.
So it was especially unusual when San Diego State University astronomers made back-to-back discoveries recently that have helped define a new class of planets.
more...

Kepler telescope team finds 11 new solar systems
NASA's planet-hunting Kepler space telescope has found 11 new planetary systems, including one with five planets all orbiting closer to their parent star than Mercury circles the Sun. more...

Alma telescope glimpses space's mysteries from on top of the world
Alma, a super-sensitive radio telescope 5,000m above sea level in Chile, will detect a new galaxy every three minutes more...

Hubble snaps photo of oldest galaxy on record
The space administration said it has captured an image of a group of galaxies located 13.1 billion light years away. The team said the galaxies represent a cluster in the initial stages of development. more...

Amazing Astronomy Illustrations From the 1800s Resurface Online
Recently digitized drawings by a 19th-century artist reveal stunning sunspots, auroras and even planetary bodies as they were observed in the Victorian era. more...

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  Discover everything that you REALLY need to know about telescopes and how to find interesting things to look at in the night sky...

You can find all the information that you really need in my online course. It gives you all the essential information to be a good astronomer, without lots of jargon or difficult maths. You'll get loads of free bonuses and it also has videos and animations to help make the explanations clear and concise. So if you want to know what Sir Patrick Moore wished for...

...please take a look at my eCourse called
'Basic Astronomy with a Telescope'. It's what Sir Patrick wished he'd had when he started out in astronomy!

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  Are you interested in Imaging?

You can learn how to take stunning images of the night sky with your digital SLR camera that will amaze your friends and family with the eBook
DSLR Astrophotography - A Beginners Guide which I co-wrote with my friend Jon Walton...

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To contact us

Telephone me on +44(0)208-144-1091

or contact me by email

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